Clay Shirky's TED talk on the social media revolution.

This is worth fifteen minutes of every media practitioner's time but if you've not got the full fifteen then the last few lines resonated loud and clear from 14.30 beginning "The media landscape that we knew ..... where professionals broadcast to amateurs...is slipping away....  how can we make best use of this medium? Even though it means changing the way we've always done things."

Thanks @jeffjarvis